All good responses, thanks for the input. I heard back from the seller on the properties I was looking at last night. I initially got the cap rate from those sales from Costar, and if you take the actual rents divided by the sale price, it did not equal the cap rates (though it wasn't far off), so I still don't know how they were initially calculated. But, it WAS quoted on Costar, so that might be the problem in itself.
Michael- Surprised to hear that the emphasis for this type of property is on cash on cash rates. I posted in depth in another thread or two about why I felt the emphasis should be on overall cap rates. But, if market participants (other than brokers, which often quote this to impress potential buyers) seem emphasize this metric for this type of property, then I will increase emphasis on it also.
Stephen- the property I am looking at is in Illinois, though about two hours south of Chicago. The problem in my case was that the tenant mix was a bit unique and the other sales that I was looking at were essentially the only ones with similar tenant mixes in this location. As a result, cap rates from "normal" sales of nice, new retail strip centers were considered, but they aren't taking place at the same level as this one.
Secondary sources for cap rate data are pretty useless in tertiary markets.
That is the truth. I usually quote Realty Rates, although it is more or less added discussion in a lot of cases. Robert Watts verified that the rate quotes include metro, secondary, and tertiary markets. But on the flip side, the ranges are so wide, it is pretty much guaranteed that any cap rate that you come up with will be in that range.